Simplify truffle config

packages/concordia-contracts/README.md

@@ -14,51 +14,55 @@ yarn lint
 ```
 
 ## Migrate contracts
-Define the host and port of the blockchain in use.
-Default values are:
+Default host and port values of the blockchain are:
 
 | host | port |
 |---|---|
 | 127.0.0.1 | 8545 |
 
+Migrate (using the development network by default):
+```shell script
+yarn migrate
+```
+
+### Setting different host and port values
+Define the host and port of the blockchain in use.
+
 Linux:
 ```shell script
-export DEVELOP_CHAIN_HOST="127.0.0.1"
-export DEVELOP_CHAIN_PORT="7545"
+export CHAIN_HOST="127.0.0.1"
+export CHAIN_PORT="7545"
 ```
 
 Windows:
 ```shell script
-SET DEVELOP_CHAIN_HOST="127.0.0.1"
-SET DEVELOP_CHAIN_PORT="7545"
+SET CHAIN_HOST="127.0.0.1"
+SET CHAIN_PORT="7545"
 ```
 
-Migrate (using the development network here, change if necessary):
+Migrate using the `env` network :
 ```shell script
-yarn migrate --network develop
+yarn _migrate --network env
 ```
+**Notice the underscore `_` suffix in the script name. This is not a mistake.**
 
 ## Test contracts
-Define the host and port of the blockchain in use.
-Default values are:
+Default host and port values of the blockchain are:
 
 | host | port |
 |---|---|
 | 127.0.0.1 | 8546 |
 
-Linux:
-```shell script
-TEST_CHAIN_HOST="127.0.0.1"
-TEST_CHAIN_PORT="7545"
-```
 
-Windows:
+Test:
 ```shell script
-SET TEST_CHAIN_HOST="127.0.0.1"
-SET TEST_CHAIN_PORT="7545"
+yarn test
 ```
 
+### Setting different host and port values
+Define the host and port of the blockchain in use like above.
+
 Test:
 ```shell script
-yarn test
+yarn test --network env
 ```

packages/concordia-contracts/truffle-config.js

@@ -2,7 +2,7 @@ const path = require('path');
 const defaults = require('./constants/config/defaults');
 
 const {
-  DEVELOP_CHAIN_HOST, DEVELOP_CHAIN_PORT, TEST_CHAIN_HOST, TEST_CHAIN_PORT,
+  CHAIN_HOST, CHAIN_PORT,
 } = process.env;
 
 module.exports = {
@@ -16,13 +16,18 @@ module.exports = {
   contracts_build_directory: path.join(__dirname, 'build/'),
   networks: {
     develop: {
-      host: DEVELOP_CHAIN_HOST || defaults.develop.chainHost,
-      port: DEVELOP_CHAIN_PORT || defaults.develop.chainPort,
+      host: defaults.develop.chainHost,
+      port: defaults.develop.chainPort,
       network_id: '*',
     },
     test: {
-      host: TEST_CHAIN_HOST || defaults.test.chainHost,
-      port: TEST_CHAIN_PORT || defaults.test.chainPort,
+      host: defaults.test.chainHost,
+      port: defaults.test.chainPort,
+      network_id: '*',
+    },
+    env: {
+      host: CHAIN_HOST,
+      port: CHAIN_PORT,
       network_id: '*',
     },
   },